Presidential Communications Development and Strategic Planning Office & Quezon, M. L. I. (2014). The official calendar of the Republic of the Philippines: An almanac of Philippine commemorations : enlivened with illustrations and information. Presidential Communications Development and Strategic Planning Office.
Chicago-referens (17:e uppl.)Presidential Communications Development and Strategic Planning Office och Manuel L. III Quezon. The Official Calendar of the Republic of the Philippines: An Almanac of Philippine Commemorations : Enlivened with Illustrations and Information. Manila: Presidential Communications Development and Strategic Planning Office, 2014.
MLA-referens (9:e uppl.)Presidential Communications Development and Strategic Planning Office och Manuel L. III Quezon. The Official Calendar of the Republic of the Philippines: An Almanac of Philippine Commemorations : Enlivened with Illustrations and Information. Presidential Communications Development and Strategic Planning Office, 2014.